Summary

Adobe has released security updates for Adobe Flash Player for Windows, Macintosh, Linux and ChromeOS. These updates address critical vulnerabilities that could potentially allow an attacker to take control of the affected system.

Affected Versions

Product

Affected Versions

Platform

Adobe Flash Player Desktop Runtime

23.0.0.162 and earlier

Windows and Macintosh

Adobe Flash Player Extended Support Release

18.0.0.375 and earlier

Windows and Macintosh

Adobe Flash Player for Google Chrome

23.0.0.162 and earlier

Windows, Macintosh, Linux and ChromeOS

Adobe Flash Player for Microsoft Edge and Internet Explorer 11

23.0.0.162 and earlier

Windows 10 and 8.1

Adobe Flash Player for Linux

11.2.202.635 and earlier

Linux

To verify the version of Adobe Flash Player installed on your system, access the About Flash Player page, or right-click on content running in Flash Player and select "About Adobe (or Macromedia) Flash Player" from the menu. If you use multiple browsers, perform the check for each browser you have installed on your system.

Solution

Adobe categorizes these updates with the following priority ratings and recommends users update their installation to the newest version:

Adobe recommends users of the Adobe Flash Player Desktop Runtime for Windows and Macintosh update to 23.0.0.185 via the update mechanism within the product when prompted [1], or by visiting the Adobe Flash Player Download Center.

Adobe Flash Player installed with Google Chrome will be automatically updated to the latest Google Chrome version, which will include Adobe Flash Player 23.0.0.185 for Windows, Macintosh, Linux and Chrome OS.

Adobe Flash Player installed with Microsoft Edge and Internet Explorer 11 for Windows 10 and 8.1 will be automatically updated to the latest version, which will include Adobe Flash Player 23.0.0.185.

[1] Users of Flash Player 11.2.x or later for Windows, or Flash Player 11.3.x or later for Macintosh, who have selected the option to 'Allow Adobe to install updates' will receive the update automatically. Users who do not have the 'Allow Adobe to install updates' option enabled can install the update via the update mechanism within the product when prompted.

Vulnerability Details

These updates resolve a type confusion vulnerability that could lead to code execution (CVE-2016-6992).

These updates resolve use-after-free vulnerabilities that could lead to code execution (CVE-2016-6981, CVE-2016-6987).